Remove duplicate `:ssl` config in MyXQL Adapter (#630) #1668

Job	Run time
mysql integration test (1.11.4-erlang-23.3.4.9-alpine-3.16.9, 5.7)	2m 5s
mssql integration test (1.11.4-erlang-23.3.4.9-alpine-3.16.9, 2017)	2m 6s
mysql integration test (1.11.4-erlang-23.3.4.9-alpine-3.16.9, 8.0)	2m 8s
postgres integration test (1.11.4-erlang-23.3.4.9-alpine-3.16.9, 16.2-alpine)	1m 40s
mssql integration test (1.11.4-erlang-23.3.4.9-alpine-3.16.9, 2019)	2m 22s
postgres integration test (1.11.4-erlang-23.3.4.9-alpine-3.16.9, 11.11-alpine)	1m 43s
unittest (1.15.6, 24.3.4.13)	2m 40s
postgres integration test (1.11.4-erlang-23.3.4.9-alpine-3.16.9, 9.6-alpine)	1m 49s
unittest (1.15.6, 26.1.2, lint)	2m 46s
postgres integration test (1.11.4-erlang-23.3.4.9-alpine-3.16.9, 9.5-alpine)	1m 42s
	21m 1s

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